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Pensions and Other Postretirement Benefits (Fair Value of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets $ 18,319 $ 16,248
Level 1 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 1,637 1,511
Level 2 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 16,682 14,737
Level 3 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 0
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 7,736
Equity securities | Level 1 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 0
Equity securities | Level 2 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 7,736
Equity securities | Level 3 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 0
Fixed income securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 15,417 6,813
Fixed income securities | Level 1 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 0
Fixed income securities | Level 2 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 15,417 6,813
Fixed income securities | Level 3 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 0 0
Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 2,902 1,699
Cash and cash equivalents | Level 1 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 1,637 1,511
Cash and cash equivalents | Level 2 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets 1,265 188
Cash and cash equivalents | Level 3 Inputs    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit pension plan assets $ 0 $ 0